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Characteristics of petrochemical wastewater and detection of petroleum wastewater
Petrochemical is a series of organic processing processes based on petroleum as raw material, mainly based on cracking, refining, fractionation, reforming and synthesis. The wastewater generated in the production has complex components, large fluctuations in water quality and quantity, high conce...Read more -
Application, development prospects and testing of urban sewage treatment technology
1 Characteristics and treatment requirements of sewage in small towns 1.1 Characteristics of sewage in small towns The characteristics of sewage in small towns are determined by various factors. Due to the small population size and low tap water penetration rate of small towns, the sewage dischar...Read more -
Analysis of China’s water pollution control industry development policy, industry chain panorama, competition pattern and future prospects in 2025
Content summary: Water pollution control is the treatment of water bodies that can directly or indirectly affect human life and development around the crowd space, mainly including pollutant emission reduction and environmental restoration. In recent years, the state has successively issued a ser...Read more -
Application of Lianhua uv vis multi-parameter water quality analyzer LH-3BA(V12) in Food Processing Enterprises
The links that generate wastewater in the food industry mainly include the following aspects: Raw material cleaning: When cleaning raw materials such as vegetables, fruits, meat, and seafood, a large amount of wastewater containing mud, pesticide residues, and microorganisms will be generated. Fo...Read more -
Booth E4A72 at the 26th IE EXPO China 2025, witnessing the debut of Lianhua Technology’s new products
The highly anticipated IE EXPO China 2025 26th China Environmental Expo will be held from April 21st to 23rd at the Shanghai New International Expo Center. As the flagship environmental exhibition in Asia, this year’s exhibition has exceeded 200000 square meters in scale and gathered 2500...Read more -
Application of vials reagents of rapid water quality testing by Lianhua Technology
Since the Sino-US trade friction in 2018, the tariff war has become an important means of bargaining between major powers. In 2025, when the global situation is turbulent, US trade protectionism is on the rise. On April 10, the US government announced that the comprehensive tariff rate on China...Read more -
![[Little Knowledge, Big Question] How does a spectrophotometer detect COD?](https://cdn.globalso.com/lhwateranalysis/S700-spectrophotometer.png)
[Little Knowledge, Big Question] How does a spectrophotometer detect COD?
Spectrophotometer is a conventional instrument in modern water quality testing laboratories. Its principle is to use a light source that can generate multiple wavelengths, and then generate a light source of a specific wavelength through a series of spectroscopic devices. After the light passes ...Read more -
Lianhua Technology Product Use Tips Answers
1. When testing, the total nitrogen is lower than the ammonia nitrogen. What is the reason? A: First determine whether the total nitrogen is low or the ammonia nitrogen is high. The detection method of ammonia nitrogen is very simple, but there are too many interferences, which can easily cause ...Read more -
Small knowledge and big knowledge丨Total phosphorus standard sample configuration tutorial
Configuring standard samples is something that needs to be done frequently during experiments. Taking the experiment related to testing water quality indicators as an example, by configuring standard samples, by comparing the measured value with the reference value of the standard sample, one can...Read more -
Small knowledge and big knowledge丨Ammonia nitrogen standard sample configuration tutorial
Configuring standard samples is something that needs to be done frequently during experiments. Taking the experiment related to testing water quality indicators as an example, by configuring standard samples, by comparing the measured value with the reference value of the standard sample, one can...Read more -
Small knowledge and big knowledge丨COD standard sample configuration tutorial
Configuring standard samples is something that needs to be done frequently during experiments. Taking the experiment related to testing water quality indicators as an example, configuring standard samples, by comparing the measured value with the reference value of the standard sample, one can de...Read more -
Experimental knowledge popularization: COD pretreatment-how to eliminate the influence of chloride ions
COD (chemical oxygen demand) water sample pretreatment is an important step to ensure the accuracy of COD measurement. The main purpose is to remove interfering substances in the water sample and adjust the state of the water sample to make it suitable for subsequent COD measurement. In the deter...Read more
